1 // RUN: %clang_cc1 %s -fblocks -triple x86_64-apple-darwin -std=c++11 -emit-llvm -o - | FileCheck %s 2 3 template <class T> void takeItByValue(T); 4 void takeABlock(void (^)()); 5 6 // rdar://problem/11022704 7 namespace test_int { 8 void test() { 9 const int x = 100; 10 takeABlock(^{ takeItByValue(x); }); 11 // CHECK: call void @_Z13takeItByValueIiEvT_(i32 100) 12 } 13 } 14 15 namespace test_int_ref { 16 void test() { 17 const int y = 200; 18 const int &x = y; 19 takeABlock(^{ takeItByValue(x); }); 20 21 // TODO: there's no good reason that this isn't foldable. 22 // CHECK: call void @_Z13takeItByValueIiEvT_(i32 {{%.*}}) 23 } 24 } 25 26 namespace test_float { 27 void test() { 28 const float x = 1; 29 takeABlock(^{ takeItByValue(x); }); 30 // CHECK: call void @_Z13takeItByValueIfEvT_(float 1.0 31 } 32 } 33 34 namespace test_float_ref { 35 void test() { 36 const float y = 100; 37 const float &x = y; 38 takeABlock(^{ takeItByValue(x); }); 39 40 // TODO: there's no good reason that this isn't foldable. 41 // CHECK: call void @_Z13takeItByValueIfEvT_(float {{%.*}}) 42 } 43 } 44 45 namespace test_complex_int { 46 void test() { 47 constexpr _Complex int x = 500; 48 takeABlock(^{ takeItByValue(x); }); 49 // CHECK: store { i32, i32 } { i32 500, i32 0 }, 50 51 // CHECK: store i32 500, 52 // CHECK-NEXT: store i32 0, 53 // CHECK-NEXT: [[COERCE:%.*]] = bitcast 54 // CHECK-NEXT: [[CVAL:%.*]] = load i64* [[COERCE]] 55 // CHECK-NEXT: call void @_Z13takeItByValueICiEvT_(i64 [[CVAL]]) 56 } 57 } 58 59 namespace test_complex_int_ref { 60 void test() { 61 const _Complex int y = 100; 62 const _Complex int &x = y; 63 takeABlock(^{ takeItByValue(x); }); 64 // CHECK: call void @_Z13takeItByValueICiEvT_(i64 65 } 66 } 67 68 namespace test_complex_int_ref_mutable { 69 _Complex int y = 100; 70 void test() { 71 const _Complex int &x = y; 72 takeABlock(^{ takeItByValue(x); }); 73 // CHECK: [[R:%.*]] = load i32* getelementptr inbounds ({ i32, i32 }* @_ZN28test_complex_int_ref_mutable1yE, i32 0, i32 0) 74 // CHECK-NEXT: [[I:%.*]] = load i32* getelementptr inbounds ({ i32, i32 }* @_ZN28test_complex_int_ref_mutable1yE, i32 0, i32 1) 75 // CHECK-NEXT: [[RSLOT:%.*]] = getelementptr inbounds { i32, i32 }* [[CSLOT:%.*]], i32 0, i32 0 76 // CHECK-NEXT: [[ISLOT:%.*]] = getelementptr inbounds { i32, i32 }* [[CSLOT]], i32 0, i32 1 77 // CHECK-NEXT: store i32 [[R]], i32* [[RSLOT]] 78 // CHECK-NEXT: store i32 [[I]], i32* [[ISLOT]] 79 // CHECK-NEXT: [[COERCE:%.*]] = bitcast { i32, i32 }* [[CSLOT]] to i64* 80 // CHECK-NEXT: [[CVAL:%.*]] = load i64* [[COERCE]], 81 // CHECK-NEXT: call void @_Z13takeItByValueICiEvT_(i64 [[CVAL]]) 82 } 83 } 84 85 // rdar://13295759 86 namespace test_block_in_lambda { 87 void takeBlock(void (^block)()); 88 89 // The captured variable has to be non-POD so that we have a copy expression. 90 struct A { 91 void *p; 92 A(const A &); 93 ~A(); 94 void use() const; 95 }; 96 97 void test(A a) { 98 auto lambda = [a]() { 99 takeBlock(^{ a.use(); }); 100 }; 101 lambda(); // make sure we emit the invocation function 102 } 103 // CHECK: define internal void @"_ZZN20test_block_in_lambda4testENS_1AEENK3$_0clEv"( 104 // CHECK: [[BLOCK:%.*]] = alloca [[BLOCK_T:<{.*}>]], align 8 105 // CHECK: [[THIS:%.*]] = load [[LAMBDA_T:%.*]]** 106 // CHECK: [[TO_DESTROY:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 107 // CHECK: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5 108 // CHECK-NEXT: [[T1:%.*]] = getelementptr inbounds [[LAMBDA_T]]* [[THIS]], i32 0, i32 0 109 // CHECK-NEXT: call void @_ZN20test_block_in_lambda1AC1ERKS0_({{.*}}* [[T0]], {{.*}}* [[T1]]) 110 // CHECK-NEXT: [[T0:%.*]] = bitcast [[BLOCK_T]]* [[BLOCK]] to void ()* 111 // CHECK-NEXT: call void @_ZN20test_block_in_lambda9takeBlockEU13block_pointerFvvE(void ()* [[T0]]) 112 // CHECK-NEXT: call void @_ZN20test_block_in_lambda1AD1Ev({{.*}}* [[TO_DESTROY]]) 113 // CHECK-NEXT: ret void 114 } 115
